Handy ... getting to be pretty 'dated' but, its STILL 'handy'.
Of 1978 - 1983 vintage, this is still an excellent repair guide; not overly technical, it explains 'how things work' in a broad sense, and tells what usually is required to fix problems that occur.
You won't find how to add memory, install a hard drive nor remove a virus, but you WILL find an explanation of how a fluorescent light works and how to trouble - shoot it. There is information about radios, plumbing, getting a door to hang right, make a double-hung window "like new", and guides for hundreds of other devices, systems and tools. ( )